12f1dca7a4f486e088a3e470b0e1ed37df4bf26af311b4a6257e6d61c480cceb

Resubmissions

02/04/2023, 13:07

230402-qcynnagd77 7

02/04/2023, 13:05

230402-qbzvbshg3s 7

Analysis

max time kernel
152s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
02/04/2023, 13:05

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General

Target

a/xn.class
Size

700B
MD5

a4725aafb5ed9cf2050df7a5ff965fb3
SHA1

eb9c9a489764c62d50a1ba10b49d0356d28574ca
SHA256

2ce0e46572f51ba3d179f72b7ecc8a8e92c3d098d21a01c39411e08c208babc8
SHA512

51acd86addc8b7cb3f3a4adc066c81bfb2ce14b025f86c00ab859620d271d12f68a7a53e0cfc412d51ef07fb29673a32872813c2d29ac1aa8200e3455ff2367e

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.class	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1248	AcroRd32.exe
1248	AcroRd32.exe
1248	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 696	1628	cmd.exe	29
PID 1628 wrote to memory of 696	1628	cmd.exe	29
PID 1628 wrote to memory of 696	1628	cmd.exe	29
PID 696 wrote to memory of 1248	696	rundll32.exe	30
PID 696 wrote to memory of 1248	696	rundll32.exe	30
PID 696 wrote to memory of 1248	696	rundll32.exe	30
PID 696 wrote to memory of 1248	696	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\a\xn.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\a\xN.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\a\xN.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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